3D-printed versus conventional Hyrax expanders to widen the upper jaw in adolescents

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

Adolescents with a narrow upper jaw will receive either a conventionally fabricated Hyrax expander or a custom 3D-printed Hyrax. Treatment effects on both dental and skeletal structures will be measured before and after expansion using cone-beam CT (CBCT) scans and digital dental models. The study focuses on precision, customization, and the amount and pattern of maxillary expansion across patients aged 12–17 with CVMS 3–5. Results aim to inform clinicians about differences in outcomes and fit between the two appliance types.

Why it matters

Who can join: the full rules

Inclusion Criteria:

1. Patients aged between 12 to 17 years.
2. Skeletal age ranges from CVMS 3 to CVMS 5.
3. Skeletal maxillary transverse deficiency with/without crossbite.
4. Cooperative and able to attend follow-up visits.

Exclusion Criteria:

1. Previous orthodontic treatment.
2. Craniofacial syndromes, or cleft lip and/or palate.
3. Patients with vertical growth pattern.
4. Very bad oral hygiene and active periodontal disease.
5. Vulnerable groups such as individuals with cognitive impairments or intellectual disabilities and individuals with severe mental health disorders.

Where it's running

• Faculty of dentistry, Ain Shams univeristy
  Cairo, Cairo Governorate, Egypt Recruiting

Study contacts

• Study coordinator: Sara S Mandour, Msc, Assistant lecturer
• Email: sarasaleh@dent.asu.edu.eg
• Phone: +201061531431

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

• Comparing two ways to widen the upper jaw: MARPE versus SARME

  The team will test whether mini‑screw–assisted expansion (MARPE) or surgically‑assisted expansion (SARME) better widens the upper jaw and how each method changes nasal and sinus structures in people aged 15 and older with maxillary transverse deficiency.

  Recruiting Bezmialem Vakif University · Istanbul, Fatih · NCT07326345

• Obstructive sleep apnea in children and a narrow upper jaw.

  This project will test whether children aged 6–16 who have a narrow upper jaw are more likely to have obstructive sleep apnea, using overnight sleep studies.

  Recruiting Fondation Hôpital Saint-Joseph · Rouen · NCT07086612

• Comparing 3D-Printed and Laboratory-Fabricated Maxillary Expanders

  This study is testing whether a 3D-printed maxillary expander is just as effective and more comfortable than a traditional one for kids aged 8-13 who need orthodontic treatment.

  Recruiting at 2 sites University of Pittsburgh · Pittsburgh, Pennsylvania and 1 other locations · NCT05743127

• 3D comparison of maxillary expansion methods in children

  This project tests whether the Invisalign Palatal Expander or traditional rapid maxillary expansion better widens the upper jaw in children with maxillary transverse deficiency.

  Recruiting Bezmialem Vakif University · Istanbul, Fatih · NCT07262892

• Posterior resin bite turbos with a HYRAX expander to speed up maxillary expansion in early teens

  This trial tests whether adding posterior resin bite turbos with a HYRAX expander can speed up and improve maxillary expansion in early adolescents with bilateral posterior crossbite.

  Recruiting Mansoura University · Al Mansurah · NCT07739498

• MARPE effects on sleep and the upper airway.

  This trial will test whether MARPE in 15–18-year-olds with a narrow upper jaw can lower sleep-apnea risk scores and increase upper airway size.

  Recruiting Konya Necmettin Erbakan Üniversitesi · Konya, Meram · NCT07031349

How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.